Continuous release plant food plus calcium. 1 application feeds continuously for up to 3 full months. Contains calcium to help grow better quality, longer lasting fruits and vegetables as well as natural ingredients to feed microbes in the soil. Also helps prevent common disorders in edible crops. Special formula with micronutrients grows stronger plants, producing more fruits and vegetables. Use with confidence in-ground and in containers. 4.5 pounds treats up to 135 Sq. Ft.